September 26, 1960 Harold Jacobziner, M.D.

August 19, 1960 Mr.

-J Am e r i c a n Pe t r o l e u m In s t i t u t e V.C.

July 10, 1964 Sir Theodore Fox, M.A., M.D., F.R.C.P.

June 24, 1963 Professor Harry V.

November 15, 1960 David E.

September 12, 1968 Mr. fi.

KETTERIN G LABO RATO RY ED EN AN D BET H ESD A A V EN U ES CINCINNATI, OHIO 4 3 2 1 9 U N IV ERSITY O F CINCINNATI COLLEGE OF MEDICINE D EP ARTM EN T O F EN VIRO N M EN TAL H EALTH April 3, 1967 Mr.

THEASSOCIATED ETHYL COMPANY LIMITED MEDICAL SERVICES ELLESMERE PORT, CHESHIRE H e a d O f f i c e : 20 BERKELEY SQ UARE, LONDON, W.

January 11, 1965 Hugo D.

I 5 December 1962 Mr.

(isso) HUMBLE SO U TH EAST ESSO REGION W ILLIAM B.

ETHYL CORPORATION lOO PARK AVENUE BUILDING AT 41st STREET NEWYORK 17, X.

Dear Bob: \ >i iS)i V S5V I appreciate the copies of the letter for the record.

September 12, 1962 Helen L.